Extended Data Figure 2: Schematic of the preparation of self-compensated heavily doped polymer organic semiconductors.
From: Doped polymer semiconductors with ultrahigh and ultralow work functions for ohmic contacts
Top, solution-state doping method. The undoped polymer dissolved in a suitable solvent is doped in solution by the desired dopant, and purified by repeated precipitation with a non-solvent while keeping the unwanted ions in solution. This process yields the fully self-compensated doped polymer as a solid, which can be dissolved in the desired solvent. Bottom, film-state doping method. The undoped polymer film is deposited on the desired substrate, doped by contact with a dopant solution, and purified by repeated contact with a non-solvent that dissolves the unwanted ions. This directly yields the fully self-compensated doped polymer film.
